ak需要在百度地图api官网去注册，然后创建一个应用，如此便可拿到您的ak。
Page({
data: {
currentCity: ''
},
onLoad: function (options) {
this.getLocation();
},
getLocation: function () {
var page = this
wx.getLocation({
type: 'wgs84', //默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标
success: function (res) {
// success
var longitude = res.longitude
var latitude = res.latitude
page.loadCity(longitude, latitude)
}
})
},
loadCity: function (longitude, latitude) {
var page = this
wx.request({
url:'https://api.map.baidu.com/reverse_geocoding/v3/?ak=你的ak&output=json&coordtype=wgs84ll&location='+latitude+','+longitude,
data: {},
header: {
'Content-Type': 'application/json'
},
success: function (res) {
// success
console.log(res);
var city = res.data.result.addressComponent.city;
page.setData({ currentCity: city });
},
fail: function () {
page.setData({ currentCity: "获取定位失败" });
},
})
}
})
